Projection device and controlling method of projection device

1. A projection device, comprising: at least one light emitting module, configured to generate at least one light beam according to a driving current respectively; a driver, coupled to the at least one light emitting module, configured to generate the driving current and transmit the driving current to the at least one light emitting module according to at least one operating signal; a light valve, disposed on a transmission path of the at least one light beam and configured to receive the at least one light beam to form an image light beam; a projection lens, disposed on a transmission path of the image light beam and configured to project the image light beam; and a processor, coupled to the light valve, wherein the processor includes a driver control circuit, the driver control circuit is connected via an amplifier to a resistor and to a switch that further connect to a light valve control circuit, configured to provide the at least one operating signal with a default period to the driver and provide an operation of the light valve, wherein according to the at least one operating signal, the driver generates the driving current lower than a default current during a first time interval in the default period.

2. The projection device as claimed in claim 1 , wherein the default period is equal to a projecting time length of one pixel of the projection device.

3. The projection device as claimed in claim 1 , wherein the default current is substantially equal to 200 milli-ampere.

4. The projection device as claimed in claim 1 , wherein the driver control circuit is configured to generate at least one driving operating signal and control the operation of the driver; and the light valve control circuit is coupled to the light valve, configured to control the operation of the light valve, and generate a control signal during the first time interval; wherein according the control signal and the at least one driving operating signal, the at least one operating signal indicates that the driver generates the driving current lower than the default current during the first time interval in the default period.

5. A projection device, comprising: at least one light emitting module, configured to generate at least one light beam according to a driving current respectively; a driver, coupled to the at least one light emitting module, configured to generate the driving current and transmit the driving current to the at least one light emitting module according to at least one operating signal; a light valve, disposed on a transmission path of the at least one light beam and configured to receive the at least one light beam to form an image light beam; a projection lens, disposed on a transmission path of the image light beam and configured to project the image light beam; a processor, coupled to the driver and the light valve, configured to provide the at least one operating signal with a default period to the driver and provide an operation of the light valve, wherein according to the at least one operating signal, the driver generates the driving current lower than a default current during a first time interval in the default period, wherein the processor comprises: a driver control circuit, configured to generate at least one driving operating signal and control the operation of the driver; a light valve control circuit, coupled to the light valve, configured to control the operation of the light valve, and generate a control signal during the first time interval; and a switch, having a first terminal, a second terminal and a control terminal and configured to generate the at least one operating signal via the first terminal, wherein according the control signal and the at least one driving operating signal, the at least one operating signal indicates that the driver generates the driving current lower than the default current during the first time interval in the default period, wherein the first terminal is coupled to the driver and the driver control circuit, the second terminal is coupled to a reference low voltage, and the control terminal is coupled to the light valve control circuit to receive the control signal, wherein the switch is in a closed state to pull down a voltage of the at least one operating signal according to the control signal.

6. The projection device as claimed in claim 5 , wherein the processor further comprises: a resistor; and an amplifier, coupled to the resistor, wherein the resistor and the amplifier are coupled between the driver control circuit and the switch, and the amplifier is configurated to gain the at least one driving operating signal.

7. The projection device as claimed in claim 5 , wherein the processor further comprises: a resistor; and an amplifier, coupled to the resistor, wherein the resistor is coupled between the driver control circuit and the switch, wherein the amplifier is coupled between the switch and the driver, wherein the amplifier is configurated to gain the at least one operating signal.

8. The projection device as claimed in claim 4 , wherein the processor further comprises: a multiplexer, coupled to the driver, the driver control circuit, a reference low voltage and the light valve control circuit, and configured to generate the at least one operating signal via selecting between the at least one driving operating signal or the reference low voltage, wherein the multiplexer selects the reference low voltage as the at least one operating signal according to the control signal.

9. The projection device as claimed in claim 1 , wherein the driver control circuit is configured to generate the at least one operating signal to control the operation of the driver, and the light valve control circuit, coupled to the light valve, is configured to control the operation of the light valve, and generate a control signal during the first time interval, and the processor further comprises: a logic circuit, coupled to the driver and the light valve control circuit, and configured to disable the driver when the control signal is low state.

10. A projection device, comprising: at least one light emitting module, configured to generate at least one light beam according to a driving current respectively; a driver, coupled to the at least one light emitting module, configured to generate the driving current and transmit the driving current to the at least one light emitting module according to at least one operating signal; a light valve, disposed on a transmission path of the at least one light beam and configured to receive the at least one light beam to form an image light beam; a projection lens, disposed on a transmission path of the image light beam and configured to project the image light beam; and a processor, coupled to the driver and the light valve, configured to provide the at least one operating signal with a default period to the driver and provide an operation of the light valve, wherein according to the at least one operating signal, the driver generates the driving current lower than a default current during a first time interval in the default period, wherein the processor comprises: a driver control circuit, configured to generate the at least one operating signal to control the operation of the driver; and a light valve control circuit, coupled to the light valve, configured to control the operation of the light valve, and generate a control signal during the first time interval; and a logic circuit, coupled to the driver and the light valve control circuit, and configured to disable the driver when the control signal is low state, wherein the logic circuit comprises: an AND logic gate, having a first input terminal, a second input terminal and an output terminal and coupled to the driver, wherein the first input terminal receives a driver enable signal, the second input terminal receives the control signal, and the output terminal is coupled to an enable terminal of the driver.

11. The projection device as claimed in claim 1 , wherein the default period includes the first time interval and a second time interval, and the light valve is in a turn on state during the second time interval in the default period and in a turn off state during the first time interval in the default period in response to a controlling of the processor.

12. A controlling method of a projection device, comprising: generating, by at least one light emitting module, at least one light beam according to a driving current respectively; receiving, by a light valve, the at least one light beam to form an image light beam and projecting the image light beam; providing, by a processor coupled to the light valve, at least one operating signal and providing a control signal with a default period, wherein the processor includes a driver control circuit, the driver control circuit is connected via an amplifier to a resistor and to a switch that further connect to a light valve control circuit; and generating, by a driver, a driving current according to the at least one operating signal, wherein the driving current is lower than a default current during a first time interval in the default period.

13. The controlling method as claimed in claim 12 , wherein the default period is equal to a projecting time length of one pixel of the projection device.

14. The controlling method as claimed in claim 12 , wherein the default current is equal to 200 milli-ampere.

15. The controlling method as claimed in claim 12 , wherein the step of generating the driving current according to the at least one operating signal, wherein the driving current is lower than the default current during the first time interval in the default period comprises: generating, by the driver control circuit, at least one driving operating signal to control the operation of the driver; and controlling, by the light valve control circuit, the operation of the light valve, and generating the control signal during the first time interval, wherein according the control signal and the at least one driving operating signal, the at least one operating signal indicates that the driver generates the driving current lower than the default current during the first time interval in the default period.

16. The controlling method as claimed in claim 15 , wherein the step of generating the driving current lower than the default current further comprises: pulling down a voltage of the at least one operating signal according to the control signal.

17. The controlling method as claimed in claim 16 , further comprising: gaining the at least one operating signal or the at least one driving operating signal.

18. The controlling method as claimed in claim 15 , further comprising: selecting the reference low voltage as the at least one operating signal according to the control signal.

19. The controlling method as claimed in claim 12 , wherein the step of generating the driving current according to the at least one operating signal, generating the driving current lower than the default current during the first time interval in the default period comprises: generate a at least one operating signal and control the operation of the driver; controlling the operation of the light valve, and generating a control signal during the first time interval; and disabling the driver when the control signal is low state.

20. The controlling method as claimed in claim 12 , wherein the default period includes the first time interval and a second time interval, and the light valve is in a turn on state during the second time interval in the default period and in a turn off state during the first time interval in the default period in response to a controlling of the processor.